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PCE
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DIFF Subgroup
H04L 15/32

Perforating recorders

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Apparatus or local circuits for transmitting or receiving dot-and-dash codes, e.g. Morse code > Apparatus or circuits at the receiving end > Code reproducing apparatus > Perforating recorders

CPC:

Apparatus or local circuits for transmitting or receiving dot-and-dash codes, e.g. Morse code (teaching apparatus therefor G09B; telegraph tapping keys H01H21/86) > Apparatus or circuits at the receiving end > Code reproducing apparatus > Perforating recorders

No child classifications to compare. This is a leaf node in both IPC and CPC.